Locking, signaling, and recording construction.



CI C. LAMB.

LOCKING, SIGNALING, AND RECORDING CONSTRUCTION.

APPLIcATIoN HLED N0v.r0.|915.

LIQQQSSL Patened Apr. 2Q, IQIQ.

8 SHEETS-I-SHEEI l.

accomuna [44W b l 5y www I f' C. C. LAMB.

LOCKING, SIGNALING, AND RECORDING CONSTRUCTION.

APPLICATION FILED N0v.|0,1915.

QS-,l Patented Apr. 29, 1919.

SHEETSMSHEE 2- 3 Z0 06: f@ fw Y 4M a@ x LOCKING, s lGNALl v C. C. LAMB.

N G, AND'RECORDING CONSTRUCTION.

APPLICATION FILED NOV. I0. 1915. v

l lllll-IIIIIII HIM-W 1 "ll-IIIIIII ulllllllllln VI Patented Apr.29,1919.

' 8 SHEETS-SHEET 4.

c. c. LAMB. A LOCKING, SVIGNALIG, AND RECORING lCONSTRUCTION.l

APPLICATION FILED NOV. l0, 1915- v Patented Apr. 29,1919.

8 SHEETS-SHEET 5.

@ffii/[1111111141141 'IIIIIIIIIIIIIIIIIII c'. C. LAMB. 9 LOCKING,SIGNALING, AND RECORDING CONSTRUCTIUN- APPLICATION FILED NOV. l0. 1915.1,302,384. Patented Apr. 29,1919.

8 SHEETS-SHEE 6.

WVM@

' c-v. c. LAMB.4

LOCKING, SIGNALING, ANU RECORDING CONSTRUCTION. APPLICATION FILED NO V.10.1915.v 1,302,384.

Patented Apr. 29,1919.

84 SHEETS-SHEET 7.

Ninn@ l Ziyi c. c. LAM-. l LOCKING, SIGNLING, AND RECORDINGCONSTRUCTION. APPLICATION FILED NOV. IOI 1915.

Patented Apr. 29, I9I9.

8 SHEETS-SHEET 8.

2 7 self I UNITED. STA'l ES PATENT OFFICE.

CHARLES CALVERT LAMB, OF CHICAGO, JllLliIlW-IIS,l ASSIGNOR `0F GNE-HALFT0 WILLARD M., MGEWEN, 0F CHICAGO, ILLINOIS. V

LOCKING, sIGNALrNe,

To all t may conc-ern:

"Be it known that I, CHARLES C., LAMB, a cltizen of the United States ofAmerica, and

a resident' of Chicago, county of Cook, and

State of Illinois, havel invented certain new and useful Improvementslin Locking, Signaling, and Recording Constructions, of which theAfollowing is .avspeciiication This invention relates to a signaling andrecording system for banks, prisons, jails, safes, etc., whereby theoperations of doors Lare recorded and attempts to cut through bars orother inclosing structures, etc., may b e quickly detected. Theinvention also relates to an improved cell construct-ion `'which ispracticable for installation in buildings of usual and modernconstruction.

, The objects of the inventionare to provide improved door operatingmeans `and signal.-y ing systems therefor; to provide an im provedconstruction of prison bars suitably arranged in electrical circuits tosignal and indicate either attempted cuts of the bars or complete cutstherethrough, to provide an improved construction ,of electricaleonducting members Within the cell structure for the' purpose ofavoiding possible'breaking of the conductors through aging and continualeX- pansion and contraction under Weather changes; to provide animproved sani-tary and multiple cell construction which lmay be Whollyindependent of the` construction of the building; to provide a sectionalcell con struction permitting quick and easyrepairs to obviate thenecessity of makingsteel or iron cell Walls,` and thereby provide apractically noiseless cellgto provide a cell construction which may bemaintained in alinement irrespectiveof the settling o f the building; toprovide cell door operating mechanism which may be controlled from adistant central station; to provide indicating and recording devicesatcentral stations :tor disclosing to the operator and other oliicialswhether or not the cell locks and cell doors are operatedy as desired,and the time and length of time. any door is open; to provide animproved hinged cell doorwhich is mechanically,operated but which cannotinlure a prisoner or harm the mechanism it' the prisoner should blockthe door; to provide identitication keys for the prison oiicials ANDBECORDINGCONSTRUTION.

Specification of LettersPatent. -PatQnbed pl". 29, 1919. I

Application filed November 10, 1915. i

Serial No. 60,686.

operation of recording devices for making a record of the time that anyouter prison door is opened',l and identify the-person responsible forthe key; to provide an arrangement of .outer prison f doors and lockstherefor which may be operated only from a centra-l station after anlidentification key is inserted .in the lock; and to provide in a lockedcas ing, suitable recording devices for making a permanent record ofthe-history of the operation of the various prison and cell doors. i

A further object of the inventionis to provide a prison system making itsafe for the Warden and ofiicials when living'vvithin the prison, andalso permitting them to leave the prison with the assurance. thatprisoners .cannotl get into the Wardens quarters or oliices and thatorders cannot loe disobeyed, since the entire operation ofv prison doorsis placed in the hands of one central operator. The operator cannotleave the operating room until relieved from duty= by another operator,since. the operating room ymay be locked against access by means under'the control of only thefvvarden or one of his deputies. e

An illustrative embodiment of this invention is shown in theaccompanying drawings, in \vhicli:- i

Figure luis a sectional plan view of one floor of a prison constructedaccording` to this invention. I f

Fig. Qis a detail in front elevation of the cell construction.

Fig. 3 is a sectional detail construction of cell 'bara Fig.u #L is asectional detail showing the construction of end supporting bars.

Fig. 5 is a diagrannnatic plan of the wir, ing arrangement of one groupof cells and the central station switchboard.

F ig. 6 is a Wiring diagram ofthe ltele phone system .employed'inconnection with outer door locks Fig. T is a detail in plan of the celldoor operating mechanism.

Fig. S is a detail of the cam appearing in Fig. 7 showing the vcam inits movable position.

Fig. 9 is a detail of a spring appearing in Fig. T showing` the cam inits movable position.

lshowing the 10 isa sectional det-ail in side elevation of cell dooroperating mechanism and the cell door construction.

` Fig. 11 shows in vertical sect-ion a. cell door hinge.

liig. 12 shows in side elevation a modiiied rn of cell door operatingmechanism. Jig. 13 is a sectional detail in front elevation of part 'ofthe door operating mechanism shown in Fig. 12. l Fig. 1e is a sectionaldetail in side elevation of the mechanism shown in Fig. 1?);

Fig. 15 is a detail in front elevation of a motor and gearing fordriving the cell door operating mechanism shown in Figs. 13, 11

and 15,

lig. 16 is a sectional detail taken on the line [tl-C of Fig. 1'2.

Fig. 17 is a detail of a motor and gearing tor driving the cell dooroperating mechanism shown. in Fig. 7.

1S is a detail in front elevation ivith the casing in section oa celldoor lock and inc. r Jfor operating the same.

Fig. 19 is a sectional detail taken on thev line .r--A of Fig. 1S.

. Fig. is a sectional detail taken on the line of Fig.

Fig. shows in side elevation an electrical recording-device for makingrecords of the unlocking and opening and locking of cell doors.

cai the operation of outer prison doors.

ti" is a plan view or' the recorder Prisons as ordinarily constructedmake it' a.d"-.'isable .and necessary on the part of prison s to deprivethe prisoners of many L s which could to advantage be given them, itit'ivere netter the danger ot' escapes and con'nnission of furthercrimes. It has also been round necessary in the conduct of such prismsto permit the guards to come more er less in contact with the prisoners.

The present invention' isdesigned to keep the guards and i; risonersseparated by bar con structions and control the opening and closing ofcell doors and other doors Within the prison from a central station. Ittherefore becomes impossible for guards to disobey certain orders, suchas against secret conferences with prisoners, providing them withliquor, drugs, accepting bribes, and permit ting meetings betweenprisoners and outside associates. The entire control of the prison isaccomplished from a central station, and the carrying out of orders isthus more or less guaranteed by mechanical and electrical means. l

In the drawings, the invention is shown by way of example, as applied toa prison. In Fig. 1, which represents one floor of a prison, 1 indicatesthe Wardens ofiice, having a safe 2 in which are located recordinginstruments 3 and for making permanent records of the operation of allcell and outer doors of the prison and key identification numbers ofthose 4passing through the outer doors. T he operatons room 5 contains aswitchboard 6 by means of which all prison doors are controlled, andincludes certain signaling devices for signaling a cut through any ofthe cell bars, or attempted cuts, and also whether or not the cell doorsand outer doors are,

operating as intended by the operator.

A motor generator and auxiliary power supplying devices 7 and 8 areshown in room 5. The reception room 9 is opposite the wardens room 1 andthe operatorie room 5, While the. kcell rooms 10 and 11 are shownlocated in the outer Wings of the building. Each cell room contains adouble roiv of cells 1Q which are arranged back to back, butv spacedapart to provide a space 13 in which plumbing fixtures may be located.The solid Walls 1li of the cells may be formed of concrete or any`desired material, since each double series of cells is surrounded by arow ot bars 15 Which prevent escapes. even it' the solid walls arebroken through. r1`he cell doors 16 are included in the row ofsurrounding bars 15.

A few feet distant from the bars 15 is row of bars 17 providing aninclosed Space or exercising courtbetween the bars 15 and 17, and alsopreventing guards and visitors from getting near the cells. Doorsv .18are shown. located at the ends of these courts. Between the outer row ofbars surrounding the cells andthe prison Walls 19 is a spaceQO toprovide a passage for guards, prison oiii cials and visitors.

eZZ construction.

The cells, as mentioned above, have a come mon surrounding barstructure, the rcmairv ing three walls ot' each cell being formed otconcrete or any other desired material. Eachv bar ofthe double row ot'bars 15 and 17 surrounding the cells, and also the cell doors, areconstructed as shown in Figs 3 and l0.

Lacasse Ihese bars have outer shells 21surrounding tubes 22 andinsulated v therefrom by the `gaskets 23and 24. `lWithin tube22 is atube 25 of fiber or other insulating material surrounding a metallic baror rod 26. The bars 26 are preferably within 'a high tension electriccircuit 27, `and may be in series, whereas the tubes 22 are in serieswithin an ordinary signaling circuit of low tension indicated by thedash 'and dot lines 28 (Fig. 5) The outer shell 21 is included in acommon ground rc v These conduits' are preferably rectangular tubes inwhich are inserted strips of in sulating fiber 202 carrying the springcon-. tacts 33 and 44. As appears in Fig. .2', the bar construction 'ofcells comprisesv a plu-, rality of sections, each consisting of top andbottom conduits 200 vconnected together bythe fiat end. bars 203, whichin turn are braced by the' transverse fiat connectingbars 204. Thevtubes 21 pass through apertures in the bars 204 and their endsareslightly reduced in diameter to fit in sockets`205 in the conduits200 and 201. By this. construe-.-

tion the sections comprising .a cell construction may be easilyassembled by iirst insert' ing the iber insulating strips y 202 .withthe contacts 33 and 11:4 mounted thereon into thel metallic conduits200and 201. Then all of the tubes 21, with their inner tubes and rodsassembled. therein, are inserted through the apertures in crossbars201land the sockets 205 in conduit 200. Finally,I the lower conduit 201 isplaced into position fitting over the lower ends of tubes 22 and issecured to the vertical bars 20B.

. The upper conduits 200 are preferably provided with apertured ears 200whereby the sections may be bolted into the concrete structure of theprison. The sections of the cell structure are also hinged in theconcrete wall above the cells, as shown in Fig. 2, by the hinges 207.The purpose oi' this hinge arrangement of the sections is to enr abletheir repair or the .renewal of bars without removing the section. Whenrepairs are madel to cell sections,the bolts are removed from ears 20G,and also cleats 208 on which the lower conduits 201 rest, are removedfrom the ioor. .A section may then be swung outwardly around its 'hinges207 and the bottom conduit 201 removed. Any of the bars `may then beeasily re moved and new ones inserted without re-v quiring anyspeciahwork in connecting them in Ltheir respective circuits, since themere insertion of a bar causes the inner rod v26 to engage spring-contacts 33 and the tube 22 to engage the spring contacts 4A in the aupper and lower conduits. The heads of the `bolts passing through cleats208, -and also4 the ears 206, are preferably counterf sunk in the same,to require that in removing abolt it must ybe drilled or burned out. Itdesired, the upper conduit. 200 may be provided with a removable plate209, as shownlin Fig. Ll, for the purpose of inspecting or changingcircuit connections in the conduit without removing the fiber strip 202.i

An important Jfeature of this particular construction of cells is thatthe lower transverse conduits -201 are spaced upwardly lfrom the'ioorand' provide nocorners 1n which dirt could collect.

Mechanism for-f operating the cell -doors and locks will be' describedlfurther on.

Switchboard, 'wiring plan and, arrangement y of recording devices.

' ln Fig. 5, the square 29 vrepresents the outline of a switchboard fromwhich the operation of the jail doors is controlled. In thisdiagram the'generator or motor generator 30 is shown connected by conductors` 31and 32 and circuit breaker 32.1`to one of the rods26.' This rod isconnected to all of lthe other rods 2G in the cell bars through thecontact springs 33 (Fig, 3), .4

these Isprings being arranged to connect the rods "26 at their upper andlower ends in alternate pairs, as appears in Fig. 5. The return circuitier these rods is represented' by the'conductor Isl/l, including lamp3&1, and through which current normally flows. A conductor 35, groundedon one o the outer tubes of the cell structure, is connected byconductor 35.1 to the return side of the motor line 36, and forms ashunt around lamp 34.1.. y @ne of the purposes of this high tensioncircuit is that if in sawing through a bar, the signaling apparatuswhich includes inl its circuit tubes 21 and `22, tails to operate, 'thesaw would be destroyed while in contact wit-h botli rod 26 llO topermita temporary rush ot current suiii-v .cient to operate circuitbreaker 32.1 and extingui'sh lamp 34.1. Inthis manner the operator atthe switchboard is apprised ofthe attempted cuts oi' the cell bars'.

T he circuit 28, shown by the dot. and dash lines in Fig. 5, receivesenergy from battery 37. One side of this battery is connected byconductor 38 to an electro-magnetic switch device 39 for controlling thecircuit of signaling lamps l0 and 41. The conductor 38', after passingaround the electroniagnet')connects with a conductor 42, which is inmetallic contact with one of the' tubes 22, and these tubes areconnected at their upper and lower ends in alternate pairs by thecontact springs 44. The last tube in the series is in electrical connectY, l by cciiiluetol 41'? rVlie opposite cted by con- ,i iii; parallel.through lamp l tire armature ,cuner il?, or the circuit may be throughlamp eti', Conductor 50,

ei ling bell und cond ,ctoi to or; Since' tbe cui ut normally ,11: '-i

nous tliioupgii electroinuguet 259, tlie circuit 'tluougii vthe Whitelamp fl@ normally elosed., but the low tension circuit electro- .oigueit39 is opened, for iiisteuice by cu'tftingvtlirougli one 'oftubes 223 2'@or grounded by e sim' connecting it Wit-li tui cuter tube 2l7iiii'uziture Vt6 will be released iilei tlie action of its spriijigopeii'oiiy i amil close tbe ciieui=.. tlireugfb :red .lamp ,thuslsigimliig to the sufi'i'olin boord oju'ierc :or that et the cell buts isI Wlieii circuit is thus grounded on eue ol: tubes EL it finds e. returnto buttery il? 1 couiiecfteelto one of :i series ol" Conductor 953.1connects bell 28.2 This bell accordingly ole eier-iii 'when e. bei' isbeing operated :is z sus oit the reversing switch 60 tb elevating; 'siu.opiii either direction es desired 'lloro 'teliboerclfi lotori565 iscomiuou cell doors i n tlierevi'itli :is desired.

, represented by "the (lot 5 to le led b t-riicul .V lll'iis circuit mayquickly S"- temptecl cuts of bers ere switchboard.

Iblei/972mm System and cil/taff' door operating circuits.

glzimi iitieollyva u tele in Fig. 29.' When olie of these keys is iu- Iserted in one ot' the looal'teleplione sets :it an outer prison doorencl'lumclle -.l (Fig. 27) given a turn', the key will rotaterelitivelyv to contact 'l5 (Figs. (3 and 27) causing :i number ofiii'ipulses to be sent over the cir-- cuit 2'6 and. causing' theoperation of nimbell 77 located ou tbe operators enel tbe operation ofelectro ie er meti 75) of which Serves @cel eii'cuit 80, including ebutelectro-muguet 82 und recor ling meel sui 825 shown iii'Figs. andLeys 73 1 iso serve to control the circuits ot' corresiiorfliug doorlock operating; motors 5o, Wliic circuit-s ere'iinally closed by the'f-witclibo: rd operator.,

Mount@ f on the same shaft with ey Z3 is :i Contact i embei 83.1 incircuit. with electr@ magnet 84. .lliis muguet serves to operate.rmutui'e Sii uml close the circuit o@ romuguet ll'fliis magnet opetites means for recording; u. door number :is described uitber ou. 8 und84.- receive energy from battery 8'1".

The loc-il telephone sets located zit tbe outer prison doors, and the iv'ardeus door :ir

construct-ed us shown in Figs. 27 niicl i253. .in ai) jre L55 isprovided. in the casing; 156 oi the loool telephone sets to receive theidentification key 'i3 for engaging the sp1-ing' Contact member 75 andthereby causingthe key member te be transi'nittecl to the operatoru'iien this key is rotated. The key is rotated by means of u spiralspring; 15'? in gearing connect-ieg tlie spring; with the rotatably lspindle 15;" which receives the key. s placed ou spindle 159, c zink teucausing spring 157 to impart u 159. The key muy The circuits including11m-gilets and the vertically extending bars 99. 'lliese i5 incassadoor, except when lan identilication -key is inserted in 'the localtelephone set.

Ueli doors.

,The `cell doorscomprise a frame structure including surroundingmetallic conduits 88 connected by thecross braces 89 (Fig. 2),

bars are eonstructedas previously mentioned and include the outer shells21, inner tubes 22 and rods 26 insulated therefrom. The

wires for carrying the current for energizing 99 controlled by switch GG(Fig. 5). By this means .if the central operator selectspand un-r locksone of the cell doors, the operation of latch 61 for such door willcause the closing of corresponding switchl G6 energizing inagnet 99which in turn effects the clutching of worin 96 with shaft 97. Thisshaft is coininon to a plurality of cell doors as 'indicated in Fig. 2.'It is rotated by a motor 5G located' `in the housing 100 at one `end ofa tier of cells.

Fixed on each cell door shaft 91 is a cam .101 coperating with a switch67 serving to hold the switch in closed position when the door is ineither its wide ope-n or closed positions. Switch 67 controls theoperation of -aniiuiiciator 64 on the switchboard and also the operationof a recording device 3 located in the wardens office. The centraloperator is thus apprise'd of the proper working of a cell door, and apermanent record is .made of the length of time that any cell door isopen. A housing 972 surrounding each door operating mechanism ispreferably made from a plurality of interfittingmetallic casings insulated from each other by fiber walls 103. The inner metallic casing104 has metallic connection with one of the inner tubes 2G of the cellbars, and accordingly if an attempt i ,is made to saw through one of theboxes 92 ithe saw' would ground the inner casing on' the'outer casingand in this manner effect the operation of signals on the switchboard aspneviously described. n

The. Worm Wheel 95 is preferably your-- this arrangement ,nalcd on har91 for the purpose of permitting the use of a flexible connectionbetween the bar and the worin wheel so thatI the door operatingmechanism Awill not be injured if the operation of the door is blocked,and also to prevent injury to a prisoner in case lie should stand in theway of tliedoor. This resilient connect-ion comprises a spring 213 bentinto the form shown in Fig. 9. The central portion 214 of the springpasses through a hole in the rotatable bar 91 which carries the door.The free ends 216 of spring 213 are engaged by pins 217 carried by worinwheel 95, depending upon J[he direction of rotation of the worin wheel.This spring accordingly provides a resilient driving connectionserviceable both in opening and closing a door.

Shaft 97 comprises a plurality ofsections of the width of the cellsections and coupled together as shown in Fig. 2.

"The-door mechanism show i in Figs. '12 to 15 inclusive is somewhatsimilar to the door. operating mechanism above described, but

shows an altered arrangement adapted for sliding doors. 1n thisarrangement the door operating. motor through the worin 136 drives worinwheel 137 'which carries fast a pinion 13S meshing with gear 139.

pitman 140 is pivot-ed at Yone end to gear 139.

and at its opposite end to ,a reciprocating bar or shaft 141. Racks 142are carried by this bar and pass through boxes 143 `located above eachlsliding cell door 144.

' Each rack 142 meshes with a pinion 145 which may be clutched to a gear146, in turn meshing with a rack 147 fast to the upper transverse bai148 of the correspond ingcell door. Pinion 145 and gear 146 may beclutched together by a magnetically operated clutch 149Icontrolleldifro'm"the central switchboard in the samc-.inanneiasclutches 98 (Fig. 7) employed in'lconiiection with the oscillatingdoors. 'Contacts 150 shown in Fig. 13 serve the same function as Contact,67, shown' in Fig. '7, mainly to control the circuit of recordingmechanism to indicate the time th'atany door is opened.

The switches 170, shown in Fig. 16,. normally contact with slidableplungers 171,

GeZZ door locks.

The cell door locks are each mounted in a housing 105 (Figs.l 2 andA'18), constructed Similar terlhe cell door is closed, the holrl isreturned so ils normal position by u continued op@ 'ation o' he motor,causing geur 109 to multe another half turn. The holt 61 carries a cummenaber 110.2 serving 'to cloSe swleh G6 when wueh the holt is in.unlocked pofsition.. L, 66 serves to select and opel-2te lunghe@ 99 for'ire eorresponrlu operating; mechanism. Boi f Jil die' fins 113eoiperu'tng with a pivote. arm lll in the motor circuit insnr l* ereulwill open uer n "ion o elle motor. The L l the, denrerl conne Y thepreliel cum rra e; lli/1th flue urrun for the purpose 59 (Flex in flow lveel; iin, molor ffl .h com, '.,o zl-"aln lock Ehe eell may, by' re neetthe motor 1n n L ezun 120 for operating; a with geur 109. This; su* Lcuit (32 including "he annu l Cowling (levi te and Serves ro record thelength of 'time any one eis unlocked.

and Q2 includes n Cloe 125 nrrlmgel ro par@ l vlees LG operated bj imlledesired, ne the Strip or lhe ng he cloning;

e means onde ring or any oll le Qontrol oli enen rho doors, they maysignalvthe operator byliftn devices '4in the Wardens office 1. Theseinstruments, through circuit connections with the locks of the prisondoors, also serve to record the time that any' door is unlocked.

In controlling individual cell doors, any one of these doors may beunlocked by closing the circuitl of the motor 55 (Fig. 18) for operating-such lock. The locking bolt 61 removed to unlocked position, closes thecircuit of the corresponding magnetic clutch 99 (Fig. 5), causing thedoor operating mechanism to be clutched .to shaft 97 (FigZ). This shaftis then rot-ated by motor 5G' (Fig. 17) by an operation of switch G0 onswitchboard (i (Fig. 5). 'By reversing the lposition of this switch, thedoor may be closed and again relocked by a further rotation of motor(Fig. 18). Since the recording device shown in 'Figs 2l to Q3 inclusive.is con trollcd to make records of the unlockillg and operation of any ofthe cell doors, the warden may Vkeep himself informed as to whether ornot these doors are operated at usual.

times and as required bythe rules of the prison.v

I claim 1. A construction of the class described, comprising a pluralityof cells, a door for each of said cells, electrically operated lockingmeans for each of said doors, electrically operated meansfor opening andclosing said doors and including an operating shaft common to all ofsaid doors, and electrically op lerated means for clutching any one ofsaid doors to said shaft, said means being under the control of therespective door locks' and remaining clutched with ,said shaft as -longas the door remains open.

2. A cell door construction, comprising a hollow frame rigidly securedto a rotatably mounted hollow supporting shaft, tubular bars connectingsaid frame members, elec y trical conductors passing through saidtubular bars and hollow shaft, collector rings mounted on said shaft,and a circuit including signaling devices and brushes engaging saidcollector-rings.

3. A cell door construction, comprising a supporting shaft joui-naledIin a rigid frame, a door carried by said shaft, an electric circuitincluding signaling apparatus, contact members in said circuit, and acam carried by said shaft arranged to engage said contact members forthe purpose of opening and closing said circuit to indicate when thedoor is in its open and closedpositions.

4. A construction of the class described, comprising a plurality ofscells, a cell door for each of said cells, electrically operatedlocking means for each of said doors, door opening and closing mechanismcomprising a drive shaft common toa'll of said doors, means forclutching any oneef said doors to said drive shaft, said means beingunder the control of the respective door locks, and a circuit under thecontrol of said locking meansv for indicating when said locking meansis'in unlocked position.

A construction of the class described, comprising aplurality of doors,electrical means for opening and closing any of said doors, meanscontrolled by movement of thev doors for indicating whether the same areopen or closed, and means recording the movement of said doors.

G. A construction of the class described, comprising a plurality ofdoors, electrically controlled locks for said doors, circuits for saidlocks including a switchboard located at a distance from the doors, andindicating means controlled by said locks for indicating and recordingthe condition of the same.

7. A 'construction ofthe class described, comprising a door,electrically controlled operating means for opening and closing saiddoor, an electrically controlled lock for said door, circuits for saiddoor operating and locking means, means for controlling said circuits,and mechanism under the control of said door locking means forindicating to an operator whenever the door locking means is .in lockedor unlocked position and for indicatingwhen the door is being opened.

8. A cell door construction, comprising a bar grating, a rigid frame'atone side of said bar construction, a shaft journaled in said frame, saiddoor beingsecured to said shaft, operating means for said shaft looselyjour naled thereon, and a resilient connection be'4 tween said operatingmeans and shaft whereby tlie shaft may be rotated in either direc-y tionthrough said resilient connection.

9. A cell door construction,comprising a bar grating, a rigid f 1amc atone side of said bar construction, a shaft journaled in said frame, saiddoor being secured to'said shaft,

4operating means'for said'shaft loosely journaled thereon, and a coilVspring rigidly secured to said shaft` and having opposite'ly extendingparts in position to be engaged by said operating means in eitherdirection of lnovement of the same.

10. A grating or'bar construction of the class described, comprisinofhollow end supporting members, a plurality of tubular bars connectingsaid supporting members, sockets in said supporting members for receiv-,end members and Jarranged .to eng-age said conductors` and sepa atelmeans for connecting vsaid hollow end members for the purpose ofretaining the bars in place.

11.. A constructiony of the class described, comprising a plurality ofsections 'of grating, .each of said sections including a door and dooroperating mechanism, a shaft for driiving the door operating mechanism,and mountings for said grating sections permit.- ting independentadjustment thereof for the purpose of maintaining alinement fol thesections.

1:2. A construction of the class described, comprising a plurality ofsections of grating, each of said sections having a hinge connection tothe permanent structure of a building., and means for securing saidsections against movementaround their hinges.

13.A In a system of the character described, the combination of acompartment having` a door, electrically actuated 'locking means forsaid door, electrically actuated. means for opening and closing' saiddoor, means for indicating when said locking means is in unlockedposition and for indicating when said door start-s to open, and acircuit including said locking means and said indicating means.

il. In a system of the character described, the combination With acompartment having a door, of electrically operated locking 'means forsaid door, electrically operated means for opening and closing saiddoor, means for indicating When said locking means is in unlockedposition and for indicating when said door starts to open, means formaking a record ot' the time When the door locking means is moved intounlocked position and the time consumed in opening and closing saiddoor, and a'circuit including said indicating and recording means.

15. In a vsystem of the character described, the combination of aplurality of compartments, each having a door, electrically actuatedlocking means for each of said doors, electrically operated means foropening and closing said doors, either simul- *taneously orindependently, means at a cen tr locking means is in unlocked positionand for indicating when each of said doors starts toopen, and a circuitincluding' said locking and indicating means.

16. In a system of the character described, the combination of aplurality of coinpartm station for indicating when each of said4 ments,each having` a door, electrically actin ated locli'king v'means tor eachot' said doors, cle ."ally operated mean. foi peiling and closing saiddoors, other finur- Yrncously or independently, means located at aycentral station for imli'cating` when. each of said locking means is iniinlocl-zed position and for indicating when each of said doors startsto open, means out ot the control ot the operator at the centralstation-tor recording the time that each door is locked and unlocked andthe time consiuned in the open-- ing` and closing` ot the door, and acircuit iucluding` said door locking mech-.mismand said indicatin andsaid recordii li'. In a svsem oi the character ed, the combination oit acomp yiene, at least one. Wall oi' which is compo si a plurality ofhars, e ly :it cent-ral statioi'i for indical one Wall oli' -which iscomposed or rality oi hars, Aelectrically actuated means torindicatingat a central i' any of said bars cut, mea the time of cuttingoi any ot' r a circuit including said liars and sai eating and recordingmeans.

19. In a system of the character described, the combina on ci a plura.having an inner tube and an outer tube inu sulated from each other, hellat central station to render an audible signal whenever an attempt ismade to cut any of said barsq an electric lamp adapted to he ignitedwhen any bar is cut to a sutiicient distance to open the circuit throughsaid inner tube, a second bell adapted to give an audible signal whenthe circuit is broken through said inner tube, and a circuit includingsaid bars and said indicating means.

20. In a system of the character described, the conibination of aplurality ot bars, each being composed of an inner and an outer tubeinsulated from each other, "electrically actuated means for indicating;whenever' any of said hars is cut., means i'or record' the time that anyof said bars is cut, and a ein cuit including said liars and saidindicating and recording means. y

Signed at Chicago this :5th day of llov., 1915..

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